6. Change 12 oz. Apoth. to grains.

7. 108 A. are what part of a square mile?

8. 5 rd. 7 ft. 6 in. are what fraction of a mile? 9. 18 lead pencils are what part of a gross?

10.

17

4% cu. yd. = how many cubic inches?

540

11. Find by reduction:

a. The number of grains in 1 lb. Apoth.
6. The number of grains in a Troy pound.
c. The number of square feet in 1 acre.
d. The number of inches in a mile.

e. The number of grains in 1 oz. Troy.

f. The number of grains in 1 oz. Apoth.

12. Using the table of equivalents, page 84, find:

a. The number of cubic inches in one quart, liquid measure. b. The number of cubic inches in one quart, dry measure. c. The number of grains in one ounce, Apothecaries' weight. d. The number of grains in one ounce, Avoirdupois weight. e. The number of pounds Troy that are equivalent to one pound Avoirdupois.

13. Find, to the nearest thousandth:

a. The number of cubic feet that are equivalent to one bushel.

b. The number of francs that are equivalent to one dollar. c. The number of cents that are equivalent to four marks. d. The number of cents that are equivalent to one shilling. e. The difference in size between a dry pint and a liquid pint. f. The number of pounds Troy that are equivalent to 10 lb. Avoirdupois.

g. The number of bushels that a 40-gallon cask will hold. 14. How many 5-grain tablets can be made from 7 lb. (Avoir.) of potassium chlorate?

15. Make and solve:

a. A problem that requires reduction descending in linear

measure.

b. A problem that requires reduction ascending in English money.

c. A problem that requires reduction of a denominate fraction to an integer of smaller denomination.

d. A problem that requires reduction of an integer to a fraction of higher denomination.

e. A problem that requires reduction descending in square

measure.

f. A problem that requires reduction ascending in square

measure.

ADDITION AND SUBTRACTION OF COMPOUND NUMBERS

205. Written

Add 7 lb. 8 oz., 15 lb. 14 oz., 23 lb. 15 oz.

1. 59 ft. 8 in., 47 ft. 11 in., 9 ft. 9 in.
2. 63 A. 16 sq. rd., 49 A. 53 sq. rd.

3. 5 hr. 5 min. 30 sec., 8 hr. 43 min. 47 sec.
4. 18 gal. 3 qt., 25 gal. 1 qt., 16 gal. 2 qt.

5. 41° 19' 35", 22° 50' 29", 133° 4' 50".

6. 16 T. 480 lb., 17 T. 730 lb., 19 T. 900 lb.
7. 25 yd. 2 ft., 6 yd. 1 ft., 8 yd. 2 ft.

8. 16 pk. 7 qt., 13 pk. 5 qt., 12 pk. 6 qt. 9. 27 cu. yd. 18 cu. ft., 42 cu. yd. 19 cu. ft. 10. 26 yr. 7 mo. 8 da., 17 yr. 8 mo. 9 da. 11. 8 lb. 7 oz., 16 lb. 14 oz., 19 lb. 10 oz. 12. 1 bu. 3 pk., 19 bu. 2 pk., 5 bu. 1 pk. 13. 12 wk. 13 da., 1 wk. 1 da., 25 wk. 6 da. 14. 27 hr. 38 min. 21 sec., 25 hr. 47 min. 29 sec. 15. 25 yr. 200 da., 27 yr. 321 da., 28 yr. 179 da. 206. Written

From 18 yr. 7 mo. 14 da.

9. How many years, months, and days are there from May 30, 1907, to Dec. 5, 1909 ?

1909 yr. 1907 yr.

12 mo.
NOTE.
5 da.
5 mo. 30 da.

- December is the twelfth month and May the fifth. Count 30 da. for a month.

Find the time from:

Subtract:

10. July 29, 1837, to Mar. 26, 1888.
11. Aug. 20, 1841, to Nov. 15, 1908.
12. Dec. 17, 1840, to Feb. 18, 1896.
13. May 14, 1850, to Jan. 12, 1860.
14. Oct. 29, 1764, to Aug. 23, 1860.
15. Jan. 22, 1880, to June 15, 1903.
16. July 20, 1819, to Jan. 2, 1893.
17. May 8, 1899, to Feb. 12, 1908.
18. Feb. 11, 1901, to Jan. 31, 1906.

31. War was declared between the United States and Spain on the 25th day of April, 1898, and hostilities ceased on the 13th day of August in the same year. How long did the war

last?

32. How much time has elapsed since April 14, 1861?

EXACT DIFFERENCES BETWEEN DATES

207. Written

1. What is the exact number of days between Dec. 16, 1895, and March 12, 1896?

Find the exact time between:

2. June 16, 1886, and April 7, 1887.
3. Nov. 21, 1898, and Dec. 14, 1898.
4. Jan. 26, 1907, and Dec. 21, 1907.
5. July 14, 1898, and Aug. 12, 1898.
6. Jan. 23, 1897, and June 4, 1897.
7. Sept. 19, 1899, and Feb. 16, 1900.
8. Nov. 28, 1905, and Oct. 26, 1906.

1 da. 13 hr. 27 min. Product 35 hr. + 2 hr. = 37 hr.

= 1 da. 13 hr.